Improvement in attaching bits to braces



UNITED. STATES OBED BECK, or WINDSOR, VERMONT.

IMPROVEM'ENTFIN ATTACHING BITS TO BIACLES.l

- Specification forming part of Letters Patent No. 39,111 E9. dated August 4, 1,863.V

To alluhom it may concern.-

Be itkuown that I, OBED PECK, 'ot' Windsor, in the county of Windsor and State of Vermont, have invented a new and Improved Mode of Attaching Bits to Braces or Bit- Stocks; and I do hereby declare that the followirg. is a full, clear, and exact description of the same, reference being had tothe accompanying drawings, making apartof this specification, in which- Figure l is a side View ofA a-brace or' bitstock with a bit secured in it, according to my invention; Fig. 2, an enlarged longitudinal section of the same, taken in the line a: Fig. l. A Similar letters of reference indicate corresponding parts inthe two figures.

This inventionconsists in having the outer or bit end of the brace or bit-stock provided with a hinged jaw, in the inner side of which one part of the recess is made which receives the shank of the bit, the other part ot' said recess being made in the permanent part of the brace or bitstock, and having a screwthread cut on the jaw and other part of the brace and bitstock to receive a nut, all being arranged in such a manner as to admit of the bit being veryreadily lsecured in the brace or bit-stock and readily detached therefrom.

To enable those skilled in the art to fully understand andl construct my invention, I will Y prbceed to describe it.

receive the square shank b of the bit B, and

this end ot' the brace is cut longitudinally and centrally a proper distance, and then cut outward at right angles withjthe longitudinal. partto form a separate piece, G, which is ajaw, which may be adjusted snugly to the main part, or be thrown out from it, as shown `in red outline in Fig. 2; The outer end of the brace has a screw-thread, c, cut on it, and said end is of iiaring forni-that is to say, increases in diameter from the inner to the outer end ot' the screw, as shown clearly'in Fig. 2, the screw extending around the jaw U. At the inner side of tllejaw C there is a shoulder or projection, d, which, when the jaw U is closed,I tits over a shoulder, e, on the shank b, as shown clearly in Fig.,2.

Thejaw C,wl1en the bitB is secured in the brace A, is secured in'clcse contact with .the shank b otthe bit by anut, Il, which is screwed up snugly on the screwthread c, the tiaringtbrin ot' the bit endof the brace causing the nutto bindthe jaw C snugly to the shank b and the main part of the brace.

In order to remove or detach the bit B tne thread c and 4shoved back free from tlxejaw 0, which may then be shoved outward trom the brace, as shown in red outline in Fig. 2.

facility, be adjusted in the brace and detached from it.

Having thus described my invent-ion, what I claim as new, and desire to secure by Letters Patent, is-

The ia-w G, hinged to the brace or connected therewith by ajoint, in combination with the nut D and screw-thread c, all arranged as shown, to secure the bit B firmly to the brace and admit ot' its ready adjust-ment therein and detachment therefrom, as set forth.

OBED PEOK.

Witnesses: l

SAMUEL R. STOCKER, WILLIAM GAY.

pivoted to the main part of the brace to form nut D is turned or nns'crewed from the screwf By this arrangement the bit is tirnily seA cured in the brace and may, with t-he greatest 

